/*
 * Copyright (c) 2007, 2015, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */
/*
 * Copyright 2001, 2002,2004 The Apache Software Foundation.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.sun.org.apache.xerces.internal.impl.xs.identity;

import com.sun.org.apache.xerces.internal.xs.XSIDCDefinition;

/**
 * Schema key reference identity constraint.
 *
 * @author Andy Clark, IBM
 * @xerces.internal
 */
public class KeyRef
    extends IdentityConstraint {

  //
  // Data
  //

  /**
   * The key (or unique) being referred to.
   */
  protected UniqueOrKey fKey;

  //
  // Constructors
  //

  /**
   * Constructs a keyref with the specified name.
   */
  public KeyRef(String namespace, String identityConstraintName,
      String elemName, UniqueOrKey key) {
    super(namespace, identityConstraintName, elemName);
    fKey = key;
    type = IC_KEYREF;
  } // <init>(String,String,String)

  //
  // Public methods
  //

  /**
   * Returns the key being referred to.
   */
  public UniqueOrKey getKey() {
    return fKey;
  } // getKey(): int

  /**
   * {referenced key} Required if {identity-constraint category} is keyref,
   * forbidden otherwise. An identity-constraint definition with
   * {identity-constraint category} equal to key or unique.
   */
  public XSIDCDefinition getRefKey() {
    return fKey;
  }

} // class KeyRef
